Sync the class change of Edit Column Button to JS code (#23400)

In #22767, we changed the class of `Edit Column` button from `red` to
`primary`
But `red` is used to find this button in js.....

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Co-authored-by: techknowlogick <techknowlogick@gitea.io>
Co-authored-by: zeripath <art27@cantab.net>

templates/projects/view.tmpl

@@ -128,7 +128,7 @@
 
 											<div class="text right actions">
 												<div class="ui cancel button">{{$.locale.Tr "settings.cancel"}}</div>
-												<button data-url="{{$.Link}}/{{.ID}}" class="ui primary button">{{$.locale.Tr "repo.projects.column.edit"}}</button>
+												<button data-url="{{$.Link}}/{{.ID}}" class="ui primary button edit-column-button">{{$.locale.Tr "repo.projects.column.edit"}}</button>
 											</div>
 										</form>
 									</div>